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+\
+.\" This man page was generated by the Netpbm tool 'makeman' from HTML source.
+.\" Do not hand-hack it! If you have bug fixes or improvements, please find
+.\" the corresponding HTML page on the Netpbm website, generate a patch
+.\" against that, and send it to the Netpbm maintainer.
+.TH "Ppmtospu User Manual" 1 "08 March 2012" "netpbm documentation"
+
+.SH NAME
+ppmtospu - convert a PPM image to an Atari Spectrum 512 image
+
+.UN synopsis
+.SH SYNOPSIS
+
+\fBppmtospu\fP
+
+[\fB-d0\fP|\fB-d2\fP|\fB-d4\fP]
+[\fIppmfile\fP]
+.PP
+All options can be abbreviated to their shortest unique prefix.
+You may use two hyphens instead of one. You may separate an option
+name and its value with white space instead of an equals sign.
+
+.UN description
+.SH DESCRIPTION
+.PP
+This program is part of
+.BR "Netpbm" (1)\c
+\&.
+.PP
+This program converts from the PPM format to the uncompressed Spectrum 512
+image format used on Atari ST computers.
+.PP
+Input comes from the file you name with the \fIppmfile\fP argument, or
+Standard Input by default. Output goes to Standard Output.
+.PP
+The input must be 320 pixels wide by 200 pixels high. If you have an
+image of a different size, you can use \fBpamcut\fP or \fBpamscale\fP
+to force it to these dimensions.
+
+
+.UN options
+.SH OPTIONS
+.PP
+In addition to the options common to all programs based on libnetpbm
+(most notably \fB-quiet\fP, see
+.UR index.html#commonoptions
+ Common Options
+.UE
+\&), \fBppmtospu\fP recognizes the following
+command line options:
+
+
+.TP
+\fB-d0\fP
+The program does no dithering.
+
+.TP
+\fB-d2\fP
+The program uses a 2x2 ordered dither.
+.sp
+This is the default.
+
+.TP
+\fB-d4\fP
+The program uses a 4x4 ordered dither.
+
+
+
+
+.UN seealso
+.SH SEE ALSO
+.BR "sputoppm" (1)\c
+\&,
+.BR "spctoppm" (1)\c
+\&,
+.BR "pamscale" (1)\c
+\&,
+.BR "pamcut" (1)\c
+\&,
+.BR "ppm" (1)\c
+\&
+
+
+.UN author
+.SH AUTHOR
+
+Copyright (C) 1990 by Steve Belczyk
+
+
+.UN history
+.SH HISTORY
+.PP
+This program was new in Netpbm 10.58 (March 2012).
+.PP
+But it was written in 1990. Steve Belczyk posted it along
+with \fBsputoppm\fP, \fBspctoppm\fP, \fBpi1toppm\fP, and
+\fBpi1toppm\fP - all programs for dealing with Atari image formats -
+to comp.sources.misc on July 15, 1990. For reasons that have been lost
+to history, all of these entered the Netpbm (then Pbmplus) distribution
+\fIexcept\fP \fBppmtospu\fP.
+.PP
+Georges Kesseler wondered In March 2012 why there was no counterpart to
+\fBsputoppm\fP in Netpbm and searched the web, finding only one reference
+to \fBppmtopsu\fP: the 1990 comp.sources.misc posting, including the source
+code. He emailed the Netpbm maintainer suggesting it be added.
+.PP
+Bryan Henderson found the source code to be extremely primitive, not even
+using common library code. So Bryan completely recoded it, but retained
+nearly all of the original logic.
+.SH DOCUMENT SOURCE
+This manual page was generated by the Netpbm tool 'makeman' from HTML
+source. The master documentation is at
+.IP
+.B http://netpbm.sourceforge.net/doc/ppmtospu.html
+.PP \ No newline at end of file